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(No Model.)

T. GLARKE 82; J. E. UONROY.

FILTER.

,431.- Patented Feb. 28, 1888.

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WITNESSES flttorneys.

UNITED S'rn'rns Aren't rricn.

THOMAS CLARKE AND JOHN E. CONROY, OF JERSEY CITY, NEW JERSEY.

FELTER.

SPECIFICATION forming part of Letters Patent No.

378,431, dated February 28, 1888.

Application filed August 10, 1887. Serial No. 246,590. (No model.)

To aZZ whom it may concern.-

Be it known that we, THOMAS CLARKE and JOHN E. CONROY, citizens of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented a new and useful Improvement in Filters, of which the following is a specification.

Our invention relates to an improvement; in filters for marine steam-boilers; and it consists in the peculiar construction and combination of devices, that will be more fully set forth hereinafter, and particularly pointed out in the claim.

The object of our invention is to provide a filter which is adapted to remove the oil and grease from the water resulting from the condensation of steam before forcing the said water back into the boiler, and thereby preventing the oil and grease from injuring the boiler In the accompanying drawings, Figure 1 is a perspective view of a filter embodying our improvements. Fig. 2 is a vertical longitudinal sectional view of the same.

A. represents a tank of suitable dimensions, which is divided into a number of compartments, '8, O, and D, (preferably three,) by means of partitions E and F.

G represents a pipe which extends from the condenser ofthe engine (not shown) to the upper side of the compartment B, and is adapted to discharge the water from the condenser into the said compartment.

H represents a vertical pipe, which is arranged in the compartment B, and has its open lower end near the bottom of the said compartment and its upper end curved and extended through the partition E, near the upper side thereof.

1 represents a similar pipe, which is arranged in the compartment C, and has its open lower end near the bottom of the compartment and its upper end curved and extended throughthe partition F, near the upper side thereof, and adapted to discharge into the compartment D.

K represents a vertical stand-pipe, which extends up through the bottom of the compartment D, the upper end of which is slightly below the water-level. (Indicated by the dotted line a; :c in Fig. 2.) "A cylindrical strainer, L, incloses the upper portion of the pipe K and rises from the bottom of'the compartment D.

The operation of our invention is as follows: hen the water is pumped from the condenser, it passes through the pipe G and is discharged into compartment B. The oil, which becomes mingled with the water while the steam is passing through the steam-chest and steam-cylinder of the engine, rises to the top of the water and floats on the surface thereof in the compartment 13, while the water flows from the said compartment upward through the pipe H into the compartment 0. The oil still remaining in the water, if any there he, rises to the surface of the water in the compartment 0, and the water flows through the pipe I into the compartment D, and through the said compartment through the openings in the strainer L into the upper end of the straining-pipe K, from which it is forced to the boiler. The oil which accumulates in the compartments of the tank may be removed therefrom from time to time by skimming it from the surface of the water.

The filter thus constructed is adapted to purify the water resulting from the condensation of steam and to eliminate all the oil, grease, and foreign substances therefrom, thus adapting the water to he used over and over again in generating steam, and preventing the oil, grease, and foreign substances from injuriously affecting the interior of the boiler.

'We do not limit ourselves to providing the tank with three compartments, as any desired number of compartments may be employed.

Having thus described our invention, we claim- The combination, with the box or tank divided into the compartments B, O, and D by the partitions E F, of the pipe G, discharging into the compartment B over the edge thereof, the pipes H and I, rising in the compartments B and C, respectively, from points near the floors thereof, and respectively opening into the compartments 0 and D near the tops thereof, the overflow-pipe K, and the tubular strainer L, rising around said overflowpipe to a point above the waterline, substantially as specified.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures inpresence of two witnesses.

THOMAS CLARKE. JOHN E. CONBOY.

Witnesses:

BENJ. J. DOUSER, JAMES S. Enwiiu. 

